Vise



L. H. DALLARD. visE.

APPLICATION FILED JULY 11, I919.

1,340,477, Patented May 18,1920.

INVENTOR Z f 0/4; L IQ ATTORNEYS UNITED STATES PATENT OFFICE.

ucien HQDALLARI), on NEW YORK, N.

VISE.

To all whom it may concern: a I

Be it known that I, LUOIEN. H. DALLARD, a citizen'of France, and a resident of the city of New York, borough of Manhattan, in the county and State of New York, have invented a new and Improved Vise, of

which the following is a full, clear, and

exact description.

This invention relates to new and useful improvements in Vises and it pertains'more particularly to vises known asthe quick adjusting type. The primary object of theinvention is to provide a mechanism by means of which the jaws maybe readily opened to any desired adjustment without the necessity of rotating the driving screw.

A further object of the invention is to provide a novel mechanismby which the driving screw is disengaged from the operating mechanism.

Vith the above and other objects in view, reference is had to the accompanying drawings in which Figure 1 is a view partly in elevation and partly in section;

Fig. 2 is a vertical sectional view on the line 2-2 of Fig. 1;

Fig. 3 is a similar View showing the parts in expanded position;

Fig. 4 is a detail view of the cam member;

Fig. 5 is a top plan view of the expansible nut in its expanded position.

Referring more particularly to the drawings, the reference character 6 designates a bench or other suitable support, and suitably secured to said support is a track 7, the inner side walls of which are angularly disposed as designated by the reference character 8. a

The reference character 9 designates the vise base and said base has a projecting portion 10 having angular side walls adapted to engage the angular side walls 8 of the track 7 to provide means by which the vise.

is adjustable relatively to the track 7. The reference character 11 designates the stationary jaw, and 12 designates the movable jaw, both of said jaws being provided on their gripping faces with hard metal inserts 13 commonly employed in devices of this character.

The movable jaw 12 is hollowed out as at 14, and mounted in said hollowed-out portion 14 is a yoke member 15, and said yoke member is secured against -movement by means ofbolts 15 which pass through the base 9, as shown in Fig. 1. The yoke member 15 has two vertically-disposed arms'16, and said arms 16 are provided with alined perforations 17, the purposeof which will Extending through the movablej aw 12, is a rod 22, the inner end of which is screw threaded as designated by the reference character 23, and slidably mounted with re spect-to the outer end of the rod 22, is an uoperating handle 24. The screw-threaded portionf23 of the rod'22 extendsthrough' the alined perforations of the vertically extending arms 16 of the yoke 15, and surrounding Specification of Letters Patent. P t t d Ma 18, 192 Application filed my 11. 1919. Serial No. 310,156; l

said screw-threaded portion 23 and positioned between the vertically-disposed arms 16 is a split nut,.the two half sections of which are designated by the reference characters 24 and 25. The half sections 24 and 25 of the split nut have oppositely-disposed beveled ends 26, and slidably mounted on said beveled ends 26 are the beveled rings 21 heretofore mentioned. Interposed between the half sections 24 and 25 of the split nut are coil springs 27, and said coil springs 27 serve to expand the half sections 24 and 25 so that they disengage from the screwthreaded portion 23 of the rod 22. The lower ends of the levers 19 extend below their respective pivotal points, as designated by the reference character 28, and adapted foroperation between the said ends 28 of the levers,is a cam member 29. This cam member 29 is keyed to a shaft 30, as at 31, and said shaft 30 projects through the movable jaw 12, and is provided on its free end with an operating lever 32, by means of an expansion of said nut under the influence of the coil springs 27.

The operation of the device is as follows: hen it is desired to adjust the movable jaw 12, the lever 32 is operated to rotate the shaft 30, and upon rotation of the shaft 30, the narrow part 29 of the cam 29 is positioned between the lower ends 28 of the levers 19. Under the influence of the spring 33, the lower ends of these levers 19 are brought together, thus sliding the beveled rings 21 within the tapered ends 26 of the half sections 2% and 25 of the split nut. Vhen the beveled rings 21 have assumed the position shown in Fig. 5, the springs 27 spread the half sections of the split nut as shown in Figs. 3 and 5, thus permitting of free movement of the threaded end 23 of the rod 22 through the split nut.

When it is desired to grip a piece of work inserted between the jaws, the lever 32 is operated to move the shaft in the opposite direction, during which movement the broader portion 29 of the cam 29 is positioned between the lower ends 28 of the levers l9, and this movement spreads the lower ends of said levers, causing the beveled rings 21 to ride up the tapered ends 26 of the half sections 01": the split nut, causing of the operating handle 24:, it will be seen Y Having thus described my invention, what is claimed as new; is:

A device comprising a base, a stationary jaw, an adjustable jaw, a yoke carried by 7 said base and provided with perforated arms, a threaded rod carried by the adjustable jaw and passing through the perfora tions on the arms of said yoke, a split elon gated nut having tapered ends adapted to engage and disengage said rod, a plurality of springs carried by the half sections of said elongated split nut for spreading the nut out of engagement with said threaded T rod, a plurality of rings adaptedlto move over the tapered ends of said split nut to. cause the same to grip the threaded rod, and a swinging cam member adapted to operate said rings to cause engagement of the split nut with the threaded rod, substantially as described. a

LUCIEN H. DALLARD. 

